AD8655ARZ-REEL7

Overview

The AD8655ARZ-REEL7 is a single-channel, low noise, precision CMOS operational amplifier manufactured by Analog Devices. It features rail-to-rail input and output capabilities, operating within a supply voltage range of 2.7 V to 5.5 V. Key electrical specifications include a gain bandwidth product of 28 MHz, an input offset voltage maximum of 250 µV over the common-mode voltage range, and an input voltage noise density of 2.7 nV/√Hz at 10 kHz. The device utilizes DigiTrim technology for high DC accuracy and is qualified for automotive applications.

Feature Summary

• Utilizes DigiTrim technology to achieve high DC accuracy with low offset voltage and drift.
• Features rail-to-rail input and output architecture for wide dynamic range in single-supply systems.
• Provides industry-leading low noise performance suitable for high-resolution data acquisition.

Applications

• ADC and DAC buffers
• Audio microphone pre-amplifiers and mixing consoles
• Precision filters and industrial controls
• Automotive collision avoidance systems

Procurement Notes

Verify the specific package variant (SOIC or MSOP) matches the design footprint, as the AD8655 series includes multiple packaging options. Confirm that the REEL7 suffix corresponds to the required tape and reel quantity for the manufacturing process. Ensure the component meets RoHS compliance requirements if mandated by the project specifications.

Selection Notes

Select this component for applications requiring ultra-low noise and high precision in low-voltage environments. The rail-to-rail I/O capability makes it suitable for buffering ADCs where signal integrity is critical. Consider the 28 MHz bandwidth and slew rate for high-speed filter designs. Verify thermal management needs based on the SOIC-8 package thermal resistance.

Part Context

This part belongs to the AD8655/AD8656 family of low noise, precision CMOS amplifiers. The AD8655 denotes the single-channel version, while the AD8656 is the dual-channel counterpart. Both leverage Analog Devices' proprietary DigiTrim technology to correct offset voltages post-packaging, ensuring superior DC performance compared to standard CMOS amplifiers.

Replacement Considerations

The AD8655ARMZ-REEL7 serves as a direct replacement offering the same electrical characteristics but housed in an 8-Lead MSOP package instead of the SOIC-8 form factor. Designers must verify pinout compatibility and physical board space constraints when substituting between these package types.